Bacteriostatic Water

Renew Lab Group Bacteriostatic Water is sterile water preserved with 0.9% benzyl alcohol, sold in 10, 20, 30 and 50 mL vials in packs of 1, 2, 5 and 10. Every batch is made in Houston, Texas in our ISO 5/ISO 7 cleanroom environment, tested in our own licensed HPLC lab (benzyl alcohol by HPLC, endotoxin by LAL, pH and sterility) and covered by a Certificate of Analysis that is run monthly for each production batch. Need a preservative-free option? See Sterile Water for Injection.

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Bacteriostatic Water FAQ

What is bacteriostatic water?

Sterile water preserved with 0.9% benzyl alcohol, which inhibits bacterial growth after a vial is punctured so it can be accessed more than once.

Bacteriostatic or sterile water: which do I need?

Bacteriostatic water suits multi-draw vials where benzyl alcohol is compatible with your protocol. Preservative-free sterile water suits single use or protocols that exclude benzyl alcohol.

How does the Certificate of Analysis work?

A Certificate of Analysis is run monthly and covers each production batch made that month. It is not issued per shipment. For COA questions, call 936-379-5515 or email info@renewlabgroup.com.

Is deionized water the same as bacteriostatic water?

No. Deionized water only has dissolved minerals removed; it is not sterile and has no preservative. Bacteriostatic water is sterile water with 0.9% benzyl alcohol, made in our cleanroom, tested for sterility and endotoxin, and covered by a monthly Certificate of Analysis for each production batch. They are not interchangeable.

Which vial size should I choose?

All sizes use the same formula. Smaller 10 mL vials mean a fresh vial is opened more often, while 30 and 50 mL vials suit higher-volume work and cost less per mL. Packs of 2, 5 and 10 lower the price per vial.

How should bacteriostatic water be stored?

Store unopened vials at controlled room temperature, away from direct light. After a vial is punctured, date it and follow your institution’s protocol for storage and discard. Do not use a vial if the liquid is cloudy or discolored or the seal is broken.

For Research Use Only. Not for human or veterinary use. Not a drug, food or cosmetic. Sold for laboratory and research applications under our Terms of Sale. Keep out of reach of children.

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Part of the Rhett Kenagy family of brands: Kynetide  |  Rhett Kenagy